California fires updates: Death toll in Los Angeles fires rises to 29

President Joe Biden said in a new statement, "Our hearts ache for the 24 innocent souls we have lost in the wildfires."

Biden said he continues to be "frequently briefed" on updates. He said he’s "directed our team to respond promptly to any request for additional federal firefighting assistance," adding that his team is "laser-focused on helping survivors and we will continue to use every tool available to support the urgent firefight as the winds are projected to increase."

"To the brave firefighters and first responders working day and night to suppress these fires and save lives: our nation is grateful,” Biden said. “You represent the best of America and we are in your debt."

-ABC News’ Molly Nagle

The National Weather Service has highlighted these three areas where officials believe there’s the highest chance for explosive fire growth this week. The Hurst Fire is in the highlighted area and the Palisades Fire is near the highlighted area.

The extreme fire risk will last from 4 a.m. Tuesday to noon Wednesday.

Winds could climb as high as 45 to 70 mph and humidity could be as low as 8 to 15%.

-ABC News’ Max Golembo

Los Angeles County Sheriff Robert Luna said he knows displaced residents want to return to their neighborhoods, but he warned, "we are in the third day of grid searching" in Altadena.

"It is a very grim task," he said, noting that every day crews are finding people’s remains.

Twenty-three people have been reported missing: 17 from the Eaton Fire and six in the Malibu area, the sheriff said.

Severe fire weather conditions -- high winds with low humidity -- will continue through Wednesday, keeping the fire threat in all of Los Angeles County critical, LA Fire Chief Anthony Marrone warned at a news conference.

Amid the "unprecedented disaster," Marrone shared positive news that the Eaton Fire in Altadena didn’t grow at all on Sunday.

The Eaton Fire has damaged or destroyed over 7,000 structures, Marrone said. He said damage inspections for dwellings are 26% completed.

The super scooper firefighting plane damaged by a drone last week has been repaired, Marrone said. Crews are waiting for the Federal Aviation Administration to give the OK to send the plane back in the air.